CVE-2026-82052

🔶 medium

Summary

The $regexFindAll expression can be used by an authenticated user who can run aggregation pipeline stages to crash a MongoDB server (mongod). Under certain specific conditions the regex match can start in the middle of a multi-code-unit character, triggering an assertion during query execution.

CVSS Score

6.5

Medium

EPSS Score

0.4

Exploit Probability

Published Date

2026-09-08

First Seen: 2026-09-09

📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 46.6% of all 365,890 vulnerabilities in our database.

#195,497

Below average severity

Severity Percentile

🎯 CISA SSVC Assessment Updated: Sep 8, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Partial

Limited system impact

SSVC data provided by CISA

Last Modified 2026-09-16

Source NVD 🔗

CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS Vector 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:A/V:X/RE:X/U:X

CWE IDs (Weakness Types)

CWE-617

📦 Affected Products 3

Vendor	Product	Status	Affected Versions
mongodb	mongodb	Affected	> 7.0.0 < 7.0.41
mongodb	mongodb	Affected	> 8.0.0 < 8.0.30
mongodb	mongodb	Affected	> 8.3.0 < 8.3.9

🔗 References 1

https://jira.mongodb.org/browse/SERVER-127985

Issue Tracking Vendor Advisory

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-89099	⚠️ high	7.5	0.3	A race condition in the document value layer of MongoDB Server can allow concurrent server threads to operate on the sam...	2026-09-11
CVE-2026-82053	⚠️ high	8.1	0.2	A security issue exists in MongoDB's LDAP authorization integration where pooled LDAP connections can retain stale authe...	2026-09-08
CVE-2026-82054	🔶 medium	6.5	0.3	A security issue exists in MongoDB server's JSON Pointer parser used during $jsonSchema query filter processing. When a ...	2026-09-08
CVE-2026-82055	🔶 medium	6.5	0.3	A security issue exists in MongoDB's 2dsphere index key generation that can cause a server crash due to a null pointer d...	2026-09-08
CVE-2026-82056	🔶 medium	5.3	0.3	A race condition in MongoDB server's text index query parsing can cause a heap use-after-free read when handling upsert ...	2026-09-08
CVE-2026-82057	🔶 medium	6.5	0.3	A security issue was discovered in MongoDB where an authenticated user with readWrite privileges could crash the mongod ...	2026-09-08

These CVEs affect the same products